Parachutes for planes and hands-free umbrellas: it's the International Exhibition of Invention – in pictures

From a new emergency system for the aviation industry to a way not to get wet but still use your hands, the International Exhibition of Inventions in Geneva is awash with new ideas. More than 789 exhibitors from 46 countries are taking part in the 40th year of the event and while certainly not all will become a reality, the prototypes will get you thinking